I know from locally stored knowledge that:

December 19th 1980
is the birthdate of
Jake Gyllenhaal
([fact: ["18964285@trueknowledge.com"]])

is the same as or a more accurate version of
is a more general form of
is a more accurate version of
([fact: ["1154455658@trueknowledge.com"]])

permanent
applies to
is the same as or a more accurate version of
([fact: ["1154274674@trueknowledge.com"]])

By calculation (generator: ["more_accurate_version5@trueknowledge.com"]) I know that:

December 19th 1980
is a more accurate version of
1980

December 19th 1980
is a more accurate version of
December 1980

By calculation (generator: ["moregeneral4@trueknowledge.com"]) I know that:

December 19th 1980
is the same as or a more accurate version of
1980

By calculation (generator: ["strictequal1@trueknowledge.com"]) I know that:

1980
is strictly equal to
1980

By calculation (generator: ["regex2@trueknowledge.com"]) I know that:

"1980"
is a string that contains the regular expression
"^([0-9-]+)"

"1980"
is the substring of the string and regular expression at index
"1980", "^([0-9-]+)" and 1

By calculation (generator: ["year_component@trueknowledge.com"]) I know that:

1980
is the year component of
1980

By calculation (generator: ["calendar_year@trueknowledge.com"]) I know that:

1980
is a
calendar year

By calculation (generator: ["more_accurate_version5@trueknowledge.com"]) I know that:

December 1980
is a more accurate version of
1980

By calculation (generator: ["moregeneral4@trueknowledge.com"]) I know that:

December 1980
is the same as or a more accurate version of
1980